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X8Ni9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X8Ni9

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AFNOR X8Ni9

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This page is mainly introduced the X8Ni9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X8Ni9,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Steel Garde:X8Ni9
Type:Stainless Steels
Country:France
Standard:AFNOR

Standard Number:

ITEM	Standard Number	Descriptions
1	NF EN 10028-4	Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties
2	NF EN 10222-3	Steel forgings for pressure purposes - Part 3: Nickel steels with specified low temperature properties
3	NF EN 10269	Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Application:Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
1.5662	AFNOR	France

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.10
Si		0.35
Mn	0.30	0.80
P		0.020
S		0.010
Cr
Ni	8.50	10.00
Mo		0.10
V		0.05

Mechanical Properties

Tensile strength	689～248	σb/MPa
Yield Strength	628	σ 0.2 ≥/MPa
Elongation	19	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	590～429	-
HRC	30	-

Physical Properties

Thermal expansion	45-55	e-6/K
Thermal conductivity	64-97	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8065-1523	째C
Density	7388-7988	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
X8Ni9 Stainless Steels	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk